i4DM · 22 hours ago
Backend Java API Developer
Millersville, MD
Full-time
Onsite
Mid, Senior Level
3+ years expi4DM is a company that provides federal agencies with access to experienced professionals who address unique challenges through tailored technologies. They are seeking an experienced Senior Backend / API Application Developer to design, develop, and maintain scalable, secure backend systems and APIs, collaborating with cross-functional Agile teams to deliver high-quality solutions.
ElectronicsInformation TechnologyComputer
No H1B
U.S. Citizen Only
Responsibilities
Design, develop, and maintain scalable and secure backend applications and RESTful APIs using Java (Spring Boot) and Node.js with TypeScript
Work extensively with relational databases (Salesforce, PostgreSQL, MySQL, Oracle, Microsoft SQL Server) and NoSQL data stores such as MongoDB or DynamoDB
Design and implement efficient data access layers, optimized queries, and database schemas to ensure performance and scalability
Build and maintain system-to-system integrations using RESTful APIs and event-driven messaging patterns
Configure and manage API gateways, proxies, routing, rate limiting, and access control using API management platforms
Develop asynchronous workflows using messaging systems such as Kafka or RabbitMQ
Write clean, efficient, and well-documented code with comprehensive unit and integration tests
Develop and maintain CI/CD pipelines using Jenkins or GitLab CI
Containerize applications using Docker and support orchestration with Kubernetes
Collaborate with Agile teams, participate in code reviews, and contribute to continuous improvement
Qualification
Required
Bachelor's degree in Computer Science, Engineering, or equivalent professional experience
3–5+ years of experience in backend or API development using Java and/or JavaScript/TypeScript
Strong understanding of object-oriented programming, data structures, and design patterns
Hands-on experience with SQL and relational databases
Experience working with RESTful APIs, integrations, and distributed systems
Proficiency with Git and Agile development practices
Preferred
Experience with microservices architectures and integration middleware including Mulesoft
Knowledge of healthcare data exchange standards such as FHIR
Experience with cloud services (AWS: Lambda, ECS, RDS)
Familiarity with additional backend languages such as Python, Go, or Ruby
Ability to obtain and maintain a U.S. Government Public Trust clearance
Company
i4DM
i4DM provides full range of information technology consulting services to government and commercial clients.
51-200 employees
Funding
Current Stage
Growth StageCompany data provided by crunchbase